Tag Archives: SafetySkirt

Video from STOP Underrides Crash Test Event

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When there is no strong physical barrier under a truck bed, Death By Underride becomes a known unreasonable risk. Fortunately, engineers have developed effective physical barriers or underride protection – although it is not required by law. With that in mind, a group of engineers carried out R&D crash testing on August 3 at the Raleigh Underride Crash Test Event.

Four side crash tests were conducted into semitrailers:

  • Ford Fiesta into an AngelWing side guard from a 45 degree angle (39 mph)
  • Chevy Malibu into an unguarded trailer from a 45 degree angle (38 mph)
  • Chevy Impala into a SafetySkirt side guard in the rear area behind forward positioned trailer axles from a 90 degree angle (36 mph)
  • Chevy Malibu into a SafetySkirt side guard from a 90 degree angle (43 mph)

Crashed trailers were each ballasted with approximately 28,000 pounds in water tanks. Video footage in this LinkedIn post by Forensic Rock, highlights two of the crash tests:

We love working with passionate people in the AR field. And Aaron Kiefer is one of those super-passionate people we absolutely love working with.

We were lucky enough to help him and his great #StopUnderrides group collect data for an awesome test series they were running in North Carolina. His goal was to demonstrate the collision mitigation of different trailer guards on side underride collisions with lower-profile sedans.

This compilation video compares an unguarded 53′ van trailer to Aaron’s SafetySkirt design. Two Chevrolet Malibu’s were used in this test series.

The speed at impact in the unguarded test was 37.5 mph; the speed at impact for Aaron’s SafetySkirt test was 43.4 mph.

We won’t spoil it for you, but Aaron certainly knows what he is doing.

Underride Crash Tests – Unguarded Trailer vs Guarded Trailer

The guards prevented Passenger Compartment Intrusion (PCI) in each guarded test.

Note: More details will be shared in the days ahead as photos, video, and electronic data are compiled.

We are waiting to see: What will Congress do to end preventable truck underride?

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Will Congress finally, after 52 years, take bold, decisive legislative action to mandate strong comprehensive underride protection? Or will they leave it to DOT to determine if side underride protection is “warranted” before issuing a mandate?

How many more people — like a woman in a Greenwich crash on July 3, 2021 — will needlessly die due to a dangerous truck design for which engineers have developed solutions?

Fatal truck crash in Greenwich on July 3, 2021 (photo provided by passerby)
Could a fully-guarded trailer have changed the outcome of this crash?

Will trucks on our roads continue to be Unguarded: Death by Underride? Or will Congress boldly send the message through inclusion of strong underride provisions in the Infrastructure Bill to Fix the Problem NOW!?

HOW YOU CAN HELP

A fully-guarded trailer hits the road – ready to STOP underride!

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Engineering ingenuity and a lot of hard work went into the research, development, and installation of this fully-guarded trailer system. This week, a small carrier in North Carolina became part of our pilot program. We are thankful that they have agreed to provide us feedback on this #SaferTruck as they drive it on the road to carry out their transport business.

What does fully-guarded mean? It means that every part of the trailer — at the rear and both sides — is covered by equipment which has been installed to prevent a car (or pedestrian, biker, or motorcyclist) from going under the trailer in the event of a collision.

This “hybrid” safety system combines devices which have been crash tested to prevent a car from riding under, including an AngelWing metal side guard installed behind the landing gear, a SafetySkirt polyester webbing where the AngelWing ends and extending over the rear axle — fastening to the Rear Impact Guard (RIG) Retrofit attachment, which reinforces and strengthens the existing rear underride guard (otherwise known as a Rear Impact Guard or RIG, ICC Bumper, or Mansfield Bar).

Oh, and did I mention that this system includes a side skirt for fuel savings?

This retrofitted trailer proudly displays the #SaferTruckAward decals:

Underride Crash Victim Memorial Posts

Fully-guarded trailer
View from under the trailer of SafetySkirt attached to Rear Impact Guard Retrofit
RIG Retrofit plus SafetySkirt

AngelWing side guard in action:

Crash Tests of Rear Underride Guard Reinforcement Attachments, 2016 & 2020

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In 2016, Aaron’s team conducted a full overlap rear crash test at approximately 35 mph closure.  This test, which was conducted on a reinforced trailer that had already suffered significant rear collision damage.  The lightly reinforced rear guard wasn’t able to prevent underride.  (TrailerGuards.com) 

Aaron’s team has continued to develop trailer underride guards.  Recently, they crashed a reinforced trailer with a 2012 Chevy Impala at 38 mph and approximately 25% overlap.  This test illustrated that bolt on reinforcements can prevent deadly underride and passenger compartment intrusion (PCI).   

Video of Crash Test into a 2005 Vanguard Trailer with a reinforced rear underride guard at 38 mph on January 25, 2020:

Compare that to a crash test by IIHS of a Vanguard 2013 trailer with a weak rear underride guard at 35 mph — at 8:28 on this video:

Crash car after the 38 mph collision into the rear of a tractor trailer: No Passenger Compartment Intrusion (PCI) Hallelujah!!!

Compare that to the initial design of the Rear Reinforcement Attachments on March 12, 2016:

Now that we have proof that these lightweight aluminum plates can prevent deadly underride, should we simply encourage voluntary adoption of this life-saving safety solution? Or should we require every truck in the U.S. to install safety equipment which can meet that level of performance?

In other words, are we going to make it the law to install equipment which can prevent underride when passenger vehicles collide with the rear of large trucks?

8-year-old boy killed in crash involving pickup, tractor-trailer in Lubbock County

1 person dies after pickup truck crashes into delivery truck on Taylorsville Road

Va. family grieves after man killed in Thanksgiving underride crash

Ready For Crash Testing

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Crash testing is always unnerving: Will it work — successfully preventing underride and Passenger Compartment Intrusion (PCI)? Or will it fail — providing some useful information but sending the enthusiastic engineer back to the drawing board?

Either way, the adrenaline of anticipation followed by the jarring crash invariably leave me unsettled.

Super Single Tires Could Offset Cost of Side Guards: Save Weight/Cost/Lives!

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Super single tires (in place of the more common dual tire set-up) on semi-trailers could actually save weight, cost, and — when combined with side guards — lives! Sounds like a Win/Win scenario to me! But don’t take my word for it, read about the potential benefits in this truck driver blogpost:

Essentially, instead of having eighteen tires to support the trailer and truck, only ten will be needed because of the improved design of the tire itself. The super single truck tires can withstand the weight of the trailer and vehicle over the same time period as their dual counterparts. A study performed by the Oak Ridge National Laboratory showed that trucks could save an average of almost 3% on gas or diesel fuel. While 3% may not sound like much, over 125,000 miles and averaging five miles per gallon that results in a savings of 728 gallons per year.

In addition, the new tires actually offer more stability with a wider truck frame. However, the most interesting advantages are that these tires can hold up for about 200,000 miles as opposed to the standard 160,000 miles for the conventional tires. This means that money is saved on replacement as well since the fewer number of super singles which actually last 40,000 miles longer.

However, the main advantage that super singles offer is that they are stronger, yet lighter in weight than their standard counterparts by roughly 1,000 pounds in total. While this weight savings may translate to better fuel mileage, trucking companies see this as being able to add 1,000 more pounds to the cargo. This means that more can be hauled on a single trip which can earn the company even more money than before.

Read more here: http://truck-driver-blog.blogspot.com/2014/10/advantages-of-super-single-truck-tires.html?m=1

Possible Drawback (as mentioned in the video below) is what could happen when there is a tire blow-out.

Additional Citations To Check Out:

Motor carriers consider many factors — and come to different conclusions — as they evaluate wide-base tires versus standard duals for their tractors and trailers Fleets Weigh Benefits, Drawbacks of Wide-Base Tires Versus Duals Transport Topics, April 13, 2020

www.eurekalert.org › pub_releases › drnl-stf080117
Story tips from the Department of Energy’s Oak Ridge National …Aug 1, 2017 – Credit: Oak Ridge National Laboratory/Dept. of Energy … derived from old rubber tires, an Oak Ridge National Laboratory-led research team … Scientists found that single gallium cations are the key to increasing production of …Missing: super ‎| Must include: super

www.greencarcongress.com › 2006/06 › single_widebase
ORNL: Single Wide-Base Truck Tires Improve Fuel Economy …Jun 30, 2006 – Replacing the standard two thinner tires per wheel with a single wide-base tire improves the fuel … Interstate tests by ORNL’s National Transportation Research Center show… … We drive a new truck with super singles.books.google.com › books

Review of the 21st Century Truck Partnership, Second ReportNational Research Council, ‎Division on Engineering and Physical Sciences, ‎Board on Energy and Environmental Systems – 2012 – ‎Technology & EngineeringNational Research Council, Division on Engineering and Physical Sciences, Board on Energy and … ORNL. 2009. Effect of Wide-Based Single Tire on Class-8 Combination Fuel Efficiency. … High Efficiency Clean Combustion for Super Truck.

www.greencarcongress.com › 2006/10 › ornl_launches_n
ORNL Launches Nationwide Heavy-Duty Truck Efficiency Test …Oct 23, 2006 – Oak Ridge National Laboratory (ORNL) has launched a nationwide test of … Heavy-Duty Truck Efficiency Test; Single Wide Tires a Prime Focus … Earlier interstate tests by ORNL’s National Transportation Research Center … I have seen a few of these trucks pass me, recently, with the super single wheels.

Rear Reinforcement Attachment: an aluminum device installed at outer edges of a trailer’s rear underride guard to strengthen it

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Aaron Kiefer readies his Rear Reinforcement Attachment, an aluminum device installed at the outer edges of a trailer’s rear underride guard to strengthen it — preventing underride to make truck crashes more survivable & save lives.

Making plans for an upcoming crash test in North Carolina. Stay tuned as we work hard to #STOPunderrides!

Why is this needed? See the difference between a weak and strong rear underride guard:

SafetySkirt Inventor Developing Rear Reinforcement Attachment to Strengthen Rear Underride Guards on Trucks

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Eight major trailer manufacturers have designed stronger rear underride guards to withstand a crash test at 35 mph all the way across the back of the trailer — earning them the TOUGHGuard Award from the Insurance Institute for Highway Safety (IIHS). This is significant because their previous designs — though meeting the current federal standard for rear guards — have been proven too weak and ineffective by IIHS.

There are about 300,000 new trailers sold every year. Some manufacturers are selling the stronger guard as Standard on all new trailers. Others are selling it as an Option, meaning that trailers may still be sold with guards known to be too weak to stop cars and save lives.

In addition, if we don’t retrofit the existing 11 million+ trailers with stronger guards — which will meet the TOUGHGuard criteria (plus side and rear underride protection) — it will be years before the entire fleet will be safer to drive around.

Fortunately, some of the trailer manufacturers have a retrofit kit for the rear guards, so that a trucking company could theoretically purchase kits to make their trucks safer. However, without a mandate to do so, I don’t imagine that will happen too quickly.

But I am encouraged by the work of Aaron Kiefer, a North Carolina crash reconstructionist who has seen so many underride tragedies that he decided to design some solutions on his own — primarily out of his own pocket and on his own time, with the support of his family who share their husband and dad with his life-saving project.

Just this weekend, Aaron installed the latest version of his Rear Reinforcement Attachment to a 53 foot trailer. Over the last five years, Aaron has been developing a design for two aluminum triangles, which are fastened to both sides of the trailer and then attached to both ends of the existing rear underride guard.

The latest version installed on September 15, 2019.

This reinforces the strength of the rear guard — improving its capability to stop a car and prevent underride. But it, also, serves as the point of attachment for Aaron’s side guard invention, the SafetySkirt — polyester webbing which can be combined with a side skirt to both save fuel and save lives.

A previous version of the Rear Reinforcement Attachment and SafetySkirt system.

You can see the SafetySkirt being tested at the D.C. Underride Crash Test Event on March 26, 2019:

We are looking forward to the day when Aaron’s SafetySkirt System can be tested at IIHS to prove its usefulness as an affordable, lightweight solution, which could theoretically be available as an option to retrofit any truck on the road with effective side and rear underride protection.

Aaron, like Perry Ponder who invented the AngelWing side guard, and countless other engineers, who should be given a green light to solve the underride problem, are amazing members of my Underride Hero Hall of Fame — along with my husband Jerry who has contributed a wealth of ideas in this underride advocacy journey.

Video of the Underride Panel Discussion at the D.C. Underride Crash Test Event, March 26, 2019

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Safety engineers and professionals share their knowledge and thoughts in a Panel Discussion on the underride issue at the D.C. Underride Crash Test Event on March 26, 2019:

  • David Friedman, Consumer Reports, VP, Advocacy, formerly the CR Director of Cars and Product Policy and Analysis, former NHTSA Acting Administrator
  • Malcolm Deighton, engineer with Hydro, which supplies aluminum for manufacturing underride protective devices and trailer parts and which produces comprehensive underride protection technology in Europe
  • Glen Berry, Safety Director for Thomas Transport Delivery, AngelWing installed since 2017, truck driver
  • Perry Ponder, inventor of AngelWing, engineer with an accident reconstruction engineering company
  • David Dorrity, worked for Stevens Transport for years and testifies all over the country on safe trucking practices.
  • Aaron Kiefer, forensic engineer & crash reconstructionist, inventor of SafetySkirt

Moderated by Andy Young, truck litigation attorney and CDL holder.

The discussion can be viewed in four consecutive videos below.

Part 1:

Part 2:

Part 3:

Part 4:

Thank you, Perry, David, Malcolm, Aaron, Glen, David, and Andy, for taking the time to share your knowledge and thoughts on the underride problem and solutions to this deadly but preventable traffic tragedy.

Note: Video of the crash tests are available here.

Media Reports & Video Footage Unveil Highlights of the Successful D.C. Underride Crash Test Event

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If you were not able to witness the Underride Crash Tests in D.C. in person on March 26, then the next best thing is to see the media coverage of this important event and to view the video footage of all three tests of a car colliding at approximately 30 mph with the side of a tractor-trailer:

  1. The first crash test was into a trailer with an AngelWing side guard — SUCCESSFUL because it prevented underride and Passenger Compartment Intrusion (PCI).
  2. The second crash test was into a trailer with a SafetySkirt side guard — SUCCESSFUL because it prevented underride and Passenger Compartment Intrusion (PCI).
  3. The third crash test was into a trailer with NO side guard (as is the situation with 99.9% of the trucks on the road today) — SUCCESSFUL in that the devastating underride which occurred clearly showed what it is that the other two tests so importantly prevented.

VIDEO FOOTAGE from MGA Research of all three crash tests can be seen here:

First test into AngelWing:

Second test into SafetySkirt:

Third test with NO side underride protection:

Compilation of all three crash tests, including aerial views & views from inside the car:

Here is some of the media coverage of the D.C. Underride Crash Test Event:

MGA Research brought their high speed cameras to capture this video footage. Links to additional video will be shared when their creative team completes their work. WUSA9 had a GoPro camera inside the crash car.

Video of the Underride Panel discussion at the event can be viewed here.

  • David Friedman, Consumer Reports, VP, Advocacy, formerly the CR Director of Cars and Product Policy and Analysis, former NHTSA Acting Administrator
  • Malcolm Deighton, engineer with Hydro, which supplies aluminum for manufacturing underride protective devices and trailer parts and which produces comprehensive underride protection technology in Europe
  • Glen Berry, Safety Director for Thomas Transport Delivery, AngelWing installed since 2017, truck driver
  • Perry Ponder, inventor of AngelWing, engineer with an accident reconstruction engineering company
  • David Dorrity, worked for Stevens Transport for years and testifies all over the country on safe trucking practices.
  • Aaron Kiefer, forensic engineer & crash reconstructionist, inventor of SafetySkirt

Unsung hero of the event: Last year, on May 15, 2018 (what would have been the day my daughter AnnaLeah turned 24), after a hard day of hitting our heads against the wall in trying to convince legislative staffers to move the STOP Underrides! Act forward, I texted my son and said, “How are we going to get them to move?!” He texted back, “Hold a crash test at a field hearing.” I said, “What?!” It was a brilliant idea to let the leaders of this country, who can take action to end these preventable tragedies, witness crash testing in person!

Well, we couldn’t bring about a Field Hearing, but we quickly began the overwhelming process of organizing an Underride Crash Test Event right there in D.C.  — less than 2 miles from The Hill and 1 mile from the Department of Transportation.

Lois Durso and I, along with our families, friends and other underride victim families, want to thank the multitude of individuals, organizations, and companies (both named & unnamed) who have helped us as we work to pass the STOP Underrides! Act (S.665 & HR.1511) and bring about this amazing and totally volunteer-organized event:

Contributors to the STOP Underrides Initiative

Contributors to STOP Underrides! & DC Underride Crash Test

And I want to especially thank the skilled and dedicated Team Underride Crash Test Crew:

We also want to thank Akridge and ImPark for allowing us to use their D.C. parking lot (not an easy thing to find!), Northern Neck Auto Parts for providing the crash cars, and Sunbelt Rentals for providing safety barriers and equipment helpful in moving around the many vehicles to make the three crash tests go smoothly in such a short space of time. MGA Research captured amazing video footage, Mister Video ran the sound system, Andy Young served seamlessly as MC,  and Aaron Kiefer masterfully orchestrated the crash test crew in order to help us all see the clear-cut life & death difference which underride protection can make.

AngelWing crash car: 

SafetySkirt crash car: 

Unguarded crash car: 

We hope that this event will continue to raise awareness and that our message to Congress will grow stronger as people sign & share this petition: Congress, Act Now To End Deadly Truck Underride!

This event was brought about in memory of countless underride victims and in hopes of helping countless others walk away from truck crashes and live to tell about it. . .